Saw-gummer



(No Model.) 2 Sheets- Sheet 1.

J. W. MIXTER. SAW GUMMBR.

No. 406.228. U Patented July 2, 1889.

I I I IIVI/E/VTOR ATTORNEY UNITED STATES PATENT OFFICE.

JASON WV. MIXTER, OF PLYMOUTH, MASSACHUSETTS.

SAW-GUMMER.

SPECIFICATION forming part of Letters Patent No. 406,228, dated July 2, 1889.

' Application filed March 20, 1889. Serial No. 303,962. (No model.)

To all whom it may concern.-

Be it known that I, JASON WV. MIXTER, of Plymouth, in the county of Plymouth and State of Massachusetts, have invented a new and Improved Gage for Saw-Gummers, of which the following is a full, clear, and exact description.

My invention relates to an improved gage for saw-gunnners, especially adapted for use in connection with the saw-glimmer secured to myself by Letters Patent Nos. 152,302, 172,469, and 179,594, dated June 23, 1874, January 18, 1876, and July 4, 1876, and has for its object to provide an adjustable defice of simple and durable construction and of convenient manipulation, capable of gaging the exact depth of circular-saw teeth in pro cess of gumming, and insuring a uniform depth for all the teeth.

The invention consists in the combination, with a saw-glimmer, of an adjustable gage bar or link and an adjustable lock link or bar capable of contact with the gage-link, and in the novel construction and combination of the several parts, as will be hereinafter more fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar figures of reference indicate corresponding parts in all the views.

Figure 1 is a perspective view of a gummer applied to a saw and having my improvement attached. Figs. 2 and 3 are perspective views of the gage link or bar and the lock link or bar. Fig. 4 is a perspective View of a modified form of the lock-link. Fig. 5 is a side elevation of thegummer, and Fig. 6 is a plan View of the same.

.The gummer above referred to as being the preferred machine upon which the gage is to be used is provided with a saddle 10, a plate 11, revolubly held upon the saddle, a carriage 12, capable of slidingin a slot 12 in the plate, and a rotary cutter 13, journaled in the said carriage upon a shaft 13, also supported in a bracket projected horizontally from the front face of the carriage. From the foregoing brief description of the machine it will be observed that as the cutters not only oscillate, but are capable of being moved to and from the saw, an adjustable guide is abso lutely necessary.

In carrying out the invention, upon the front of the rotary plate 11 a boss 14 is formed, and a second boss 15 is produced upon the same face at a right angle to the boss 14, as illustrated in Fig. 1. Upon the boss 14 a slotted bar or link 16 is adjustably secured by means of a suitable washer and a setscrew 17, and a second slotted bar or link 18 is 'adjustably secured in like manner upon the boss 15. The link 16 is provided at one end with a lip 19, extending at a right angle from the outer face, as best shown in Fig. 2. The lip 19 is essentially L-shaped in cross-section, whereby an angular recess 20 is formed at one end of the said link. The machine illustrated is provided with a gage-screw 21, which screw passes down through one of the saddles to a contact with the back of one of the teeth.

In operation, when the machine has been properly adjusted upon the saw, as shown in Fig. 1,the-link 1G is turned until the point of the tooth to be treated has entered the recess 20. The set-screw binding the said link is then screwed down to a contact therewith, and the short link 18, which is at a right angle to the recessed or lipped link 16, is adjusted until it firmly bears against the outer edge, as is also illustrated in Fig. 1, whereupon the short link is readily fastened to place by its set-screw.

If in practiceitis found desirable, the short link 18 may be removed from the longer link 16, and instead of contacting with the longer link it may be adjusted to an engagement with the back of the tooth to be treated, in

which latter event a flange 22 is formed upon the lower end of. the .link, extending outward at a right angle thereto, as illustrated in Fig. 4, the said flange being adapted for contact with the tooth.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination, with asaw-gummer, of a gage bar or linkadjustably attached thereto, and an adjustable lock link orbar capable of contact with the said gagedink, substantially as and for the purpose specified.

cross-section and projected from one end, whereby an angular recess is formed, and an adjustable lock link or bar located at a right angle to the gage-link and capable of contact therewith, substantially as and for the purpose specified.

JASON \V. MIX'IER.

itneses:

J. FRANK CHURCHILL, ELMER \V. HATHAVVAY. 

